Trussed roof-arch



A. IMECHAM.

TRUSSED ROOF ARCH.

. APPLICATION FILED APR. 1 1920.

1,846,229. tented July 13, 1920.

2 SHEETS-SHEET l.

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TRUSSED ROOF ARCH.

APPLICATION FILED APR.1. 1920.

1,346,229. Pa nt d uly 13, 1920.

2 SHEETS-SHEET 2.

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ADELBERT MECHAM, 0F EDINBURG, NOBJJCH DAKOTA.

TBUSSEID ROOF-ARCH.

Specification of Letters Patent.

Patented July 15%,

application filed April 1,.1920. Serial No. 370,401.

buildings, in which supporting columns or posts are objectionable, and the invention has for its object to provide such a structure that is extremely simple, light and strong, and at the same time, easy to construct.

To the above end, generally stated, the invention consists of the novel devices and combinations of devices hereinafter described and defined in the claims.

Tn the accompanying drawings, which illustrate the invention, like characters indicate like parts throughout the several views.

Referring to the drawings Figure 1 is a view in transverse section showing the invention incorporated in a barn structure;

Fig 2 is a top view of the structure shown in Fig. 1, with some parts removed;

Fig 3 is a view in transverse section showing the invention incorporated in a garage or similar low structure; and

Fig. 4 is a fragmentary detail view in section taken on the line 44lof Fig. 3, on an enlarged scale.

The improved roof structure includes a plurality of laterally spaced arched trusses 5, each of which is made up of upper and lower laminated members 6 and 7, respectively. Each of said members 6 and 7 is, as shown, made up of a plurality of boards placed end to end in each course and the joints in the several courses broken. The ends of the truss members 6 and 7 are brought together and rigidly connected by nut-equipped bolts 8. Tnterposed between the truss members 6 and 7 are a. plurality of purlins 9, which are arranged progressively higher from the ends of the arched truss 5 to the center thereof. The truss members 6 and 7 are rigidly connected and frictionally clamped onto the edges of the purlins 9 by nut-equipped bolts 10 inserted through alined bores in said members. These bolts 10 are located at the lowermost sides of the purlins 9 and support the same.

Obviously, by frictionally clamping the purlins 9 between the members 6 and 7, of the arched trusses 5, and supporting the same against the bolts 10, said purlins not only act as struts for said members, but atford tie-bars which rigidly connect adjacent arched trusses and hold the same properly spaced and against lateral movement.

A plurality of ribs 11 are placed between the arched trusses 5 parallel thereto on the upper edges of the purlins 9, and nailed orv otherwise rigidly secured thereto. Roof boards 12 are secured to the member 6, of the arched trusses 5, and ribs 11. Shingles, prepared roofing or any other suitable water-tight covering, will, of course, be placed on the boards 12, but for the purpose of this case, it is not thought necessary to illustrate the same.

In Figl is illustrated a barn 13 having a ground floor 14: and a hay-loft or other storage space 15. The roof of this barn is con.- structed in accordance with my invention and each arch thereof is formed by placing two of my improved arched trusses end to end to produce a Gothic arch. The lower ends of these arched trusses are supported on the plates of the sides of the barn 13 and the upper ends thereof bear against a ridge bar 16. Obviously, the roof structure shown in Fig. 1 gives a large amount of head room, which is highly desirable in a hay-lott.

The roof structure shown in Fig. 3 is formed by the use of single trussed arches to form a Roman arch, which is customarily used in auditoriums, garages or other buildings requiring a large open floor space. A turnbuckle-equipped tension rod 17 connects the ends of the trussed arches 5 in Fig. 3 to prevent the same from spreading.

The above described arched truss may be made of any suitable material, for instance, boards of the required width and thickness may be placed end to end, as previously stated, in courses to form the upper and lower members of the truss with the joints therebe ween broken.

What I claim is 1. A roof structure comprising a plurality of laterally spaced arched trusses, each of which includes upper and lower members connected at their ends, and a plurality of laterally spaced purlins interposed between said upper and lower members and connecting adjacent arched trusses, said purlins being progressively higher from the ends of the arches to the centers thereof. .2. A roof structure comprising a plurality of laterally spaced arched trusses, each of which includes upper and lower members connected at their ends, a plurality of laterally spaced purlins interposed between said upper and lower members and connecting adjacent arched trusses, said purlins being progressively higher from the ends of the arches to the centers thereof, and nut-equipped bolts connecting the upper and lower members of the arched trusses.

3. A roof structure comprising a plurality of laterally spaced arched trusses, each of which includes upper and lower members connected at their ends, a plurality of laterally spaced purlins interposed betweensaid upper and lower members and conecting adjacent arched trusses, said purlins being progressively higher from the ends of the arches to the centers thereof, and nut-equipped bolts connecting the upper and lower members of the arched trusses, at the lower sides of the purlins and drawing said members onto the edges thereof.

4. A roof structure comprising a plurality of laterally spaced arched trusses, each of which includes upper and lower members connected at their end s,a plurality of laterally spaced purlins interposed between said upper and lower members and connecting adjacent arched trusses, said purlins being progressively higher from the ends of the arches to the centers thereof, and a roof covering supported on the upper members of the arched trusses.

5. A roof structure comprising a plurality of laterally spaced arched trusses, each of which includes upper and lower members connected at their ends, a plurality of laterally spaced purlins interposed between said upper and lower members and connecting adjacent arched trusses, said purlins being progressively higher from the ends of the arches to the centers thereof, ribs supported on the upper edges of the purlins and connecting the same, and a roof covering supported on the upper members of the arched trusses and ribs.

6. A roof structure comprising a plurality of laterally spaced arched trusses, each of which includes upper and lower laminated members connected at their ends, and a plurality of purlins interposed between said upper and lower members and connecting adjacent trusses, said purlins being progressively higher from the end of the arched trusses to the centers thereof.

In testimony whereof I aflix my signature in presence of two witnesses.

ADELBERT MECHAM.

Vitnesses HENRY MonN, N. ORDAHL. 

